Machine for molding pulleys



(No Model.) 2 She ets-'Sh-eet 1.

W. J. P. LIDDELL.

MACHINE FOR MOLDING PULLBYS.

No. 333,?65. Patented'Jan. 5,`18 86.

WITNESSES Attorney (Nd Model.) 2 Sheets-Sheet 2.

W. J. F. LIDDELL.

MACHINE FOR MOLDING PULLEYS.

No. 333,'76 5. Patented Jan. 5, 1886.

nmm

IIIIIIIIIIIHII UNITED STATES PATENT Orrrcn WALTEB J. LIDDELL, OF CHARLOTTE, NORTH CAROLNA.

,MACHINE FOR MOLDING PULLEYS.

PECIFICATIONorming part of Letters Patent No= 333,'765, dated January 5, 1886.

Application filed April 20, 1885.

To all whom it may concrn:

Be it known that I, WALTER J. F. LIDDELL, of Charlotte, County of Mecklenbugand State of North Carolina, have invented a new and useful Improvement in Apparatus for Molding Pulleys, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specifieation.

My invention relates to the means for forming nolds for pulleys or band-wheels; and it consists in the enploynent, in combination with the two parts or halves of the flask or mold, of a templet or bed-plate and a halfpattern ot' the pulley to be formed, adapted by their Construction to be connected to each other and to the two parts of the mold, in uniform relation to the latter, in such nanner that when the half-molds are formed and the two parts thereof joined, as hereinafter explained, they will exactly coincide and form the complete mold, as hereinafter described; whereby, also, the bed-plate is made to constitute a tenplet or gage for indicating the position ot' the pins and holes in the two parts of the flask, as hereinfter eXplained.

In the accompanying drawings, Figure 1 is a plan view of the cope or upper halt' of the fiask; Fig. 2, a similar View of the drag or nowel. Fig. 3 represents a section through the cope, taken on line w w, Fig. l; and Fig. 4. a similar section on line a; x of Fig. 2. Figs. 5 and 6 represent vertical sections through the bed-plate or templet and half-pulley pattern, and Fig. 7 a plan view of the half-pulley pattern. Figs. 8 and 9 represent sections through the two parts of the mold, taken on the lines y y and z z, respectively, of Figs. l and 2, and of the bed-plate and half-pattern, and Fig. 10 is a similar section through the mold, with the bed-p1ate and pattern removed and the two halves joined; and Fig. ll is a plan view of the bed-plate adapted for use for difi'erent-sized pulleys and fiasks or molds, and as a templet for marking or gaging the position of the holes and pins in the parte of the latter.

A represents the cope or upper part of the fiask, made preferably hexagonal in form, conforuing to the number of arms or spokes of the pulley, and provided with suitable in- Seral No. l6'2,830. (No model.)

tersecting webs, a, or crossbars, connecting its sides or shell and adapted to permit the ready filling of the half-fiask and the tamping of the sand therein from above, and also to assist in the retention of the sand, the web having suitable openings, a', to permit the insertion of the half-pattern therein.

B represents the lower part or half of the flask, similarly forned and open on its upper face, to permit it to be inverted over the bedplate and half-pattern, as shown in Fig. 10. These two part s are provided on their faces which are to be joined with outwardly-projecting horizontal fianges a and b, extending around them, and provided each at regular intervals with a series of pins, o and b', and holes a* and b arranged to alternate. as sho wn, so that when the cope or upper half, A, is placed upon the drag or lower half, B, the pins of one part will enter the holes of the other part, as shown in Fig. 10. The two parts A and B of the fiask are provided each with the usual handles, G.

D is a bed-plate provided on its lower face '7 with an annular fiange, D', or with suitable feet upon which it may rest, raised sufficiently above the table or support on which it is to rest to pernit the pins a? or b' to project through it, and further provided with a series of perforations, d, arranged ina circle and equidistant from each other, and through which said pins may pass, as shown in Figs. 8 and 9. The plate D is provided with a central hub or spur, d', adapted to enter a central hole in the half pattern for centering the latter, and upon opposite sides of said central hub with holes d to receive pins on opposite arms of the half-pattern, for holding the 1atter in place.

E is the pattern, made in the form of a half-pulley, and provided preferably with six arms, (any suitable number or a continuous disk may be enployed,) as giving the necessary support to the rim or peripheral fiange E uniting their outer ends with a central pert'oration, e, to receive the hub or spur d', and with pins 6 e', entering the holes (P of the plate" D, for center-ing and holding the halt-pattern in place on said plate D, as eX- lained.

With the parts of the fiask, the plate D,

IOO

and the half-pattern, formed as described, the halfpattern is secured in place on the' plate D, and the drag or the cope, the former `inverted, is placed over the plate and half-pattern, with the pins a or b' entering alternate holes ofseries d, and is then filled and properly tamped from above, after which it is removed, the half-pattern drawn and placed upon the plate` D, and another half-flash is put in place on the latter and prepared in a similar manner. Any desired number of halffiasks may thus be prepared and afterward put together, in the manner indicated in the sectional View, Fig. ll, and being exact duplicates, each halt' of the other corresponding half-flash, they unite to form the complete mold, as shown.

In Fig. ll l have shown the bed-plate D provided with several series of perforations, whereby it is adapted for use with flasks and in the molding of pulleys of different sizes. and also as a tenplet for marking or gaging the position of the alternate pins and perforations of the two parts of the fiask, and also of the pins on the half-pattern, adapting the plate to the marking of larger fiasks for the pins and holes and to receive such flasks for fonning larger or smaller pulleys, as desired. Other perforations, d may be enployed, if desired, for holding the p ns on the pattern, varying in distance from the central spur or pin, d', according to the diameter or length of arms of such pattern. The plate D, this constructed, forms a convenient device for marking the parts ot' the flask for the pins, and holes for uniting them to each other or to the bed-plate, which may be done by placing the said tenplet upon the bottom of the halffiask and boring through the perforations of the tenplet, or by markng through the same, and thus designating the points at which the pins or holes in the fiask are to occur, and by having the pins and holes to alternate in the two parts of the flask the latter are adapted to come together always in uniforn relation one to the other.

Having now described my invention, I claim as newl. In an apparatus for molding pulleys, the bed-plate or tenplet provided with the series of holes arranged equidistant from each other in circles, and with means for holding the half-pulley pattern in place thereon, substant ially as and for the purpose described.

2. In an apparatus fornolding pulleys` the combination of the bed-plate having the series of holes arranged in concentric circlesfor the reception of the parts of fiasks of different dianeters, the two parts ot' the fiask and the halt-pulley pattern, each provided with pins engaging the bed-pinte, and the latter adapted to serve as a tenplet for locating said pins on the parts of fiasks, andhalf-pulley patterns of different dianeters, all substantially as de- Scribed. v

In testimony whereof I have hereunto set my hand this 18th day of Aprl A. D. 1885.

W. J. F. LIDDELL.

VVtnesses:

VINTON LIDDELL, O. N. G. BUTT. 

